- Latch bolt retracted by knob / lever from either side unless outside is made inoperative by key outside or by rotating inside thumbturn.
- Outside knob / lever unlocked by key outside or thumbturn.
- Rotating inside knob / lever simultaneously retracts latch bolt and unlocks outside knob / lever.
- Auxiliary latch deadlocks bolt when door is locked.
- Inside knob / lever is always free of immediate egress.